Nancy,
As was already said, most "common" bead names were created to sell beads, they give either an easy to identify visual or a romantic notion.
Most people with a basic knowledge of bead collecting could identify a "Zen" bead from a line-up and most have heard of "Lewis and Clark" beads. I agree with Joyce about the Mercedes star being more applicable... as a "peace" sign has 4 arms and the Mercedes only 3 like the bead depicted, but since these names are bogus anyway, I opt for the YUGO bead, because mine look more like a Y. Zen beads are "antichrist" beads beacause they have 666 in their design.....I will be sittin' an spittin' around a campfire soon thinkin' of new ones.
The best place to find names for this "catalog" would be in the descriptions used on eBay, look under "Trade beads" and check out the "useful" nomenclatures......it's a riot!
Good luck and keep smiling, Thomas